Figure 2.

(A) Preoperative planning using the Miniaci method. H, hinge point. White line: an extension line connecting the hip center and the calculated point of expected weightbearing line after osteotomy. Black dashed line: a line connecting the lateral tibial hinge site, H, and the center of the ankle joint. White dashed line: a line connecting the lateral tibial hinge site, H, and white line. White arrow: the angle formed by black dashed line and white dashed line, determined to be the predicted correction angle. Black line: planned osteotomy site. (B-F) Calculation of latent medial laxity and lateral laxity. White dotted line: a line tangential to the distal femoral condyle. White line: a line tangential to the tibial plateau. JLCA, joint-line convergence angle (angle formed between white dotted line and white line). If the apex of the JLCA was medial, it was recorded as negative (–, varus); if it was lateral, it was recorded as positive (+, valgus).